Qingdao Hengyong Valve Industry Co., Ltd. has strong strength in independent development, design and research. The company's main products are various stainless steel flanges and sand castings, precision castings of various materials and manual, electric and pneumatic devices of stainless steel, carbon steel one-piece, two-piece and three-piece ball valves, stop valves, check valves, gate valves, filters, pipe fittings, quick connectors, etc. The products are widely used in industries and fields such as petroleum, chemical, metallurgy, electronics, machinery, textile, food, pharmaceutical, gas, construction, tap water, environmental protection, etc.